Compound mash-tun



(No Model.)

0. PPEPFER.

COMPOUND MASH TUN.

. No. 280,396. Patented July a, 1883.

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hingion. n. c.

UNITED STATES PATENT OFFICE.

I CHRISTIAN PFEFFER, OF LEBANON, ILLINOIS.

COMPOUND MAS'H-TUN.

SPECIFICATION forming part of Letters Patent No. 280,396, dated July 3, 1883.

Application filed February 20, 1883.- (No model.)

Be it known that I, CHRISTIANPFEFFER, a

citizen of the United States, residing at Lebanon, in the county of St. Clair and State of Illinois, have invented a new and useful Improved Compound Mash-Tun, of which the following is a specification.

My invention relates to improvements in compound mash-tuns for forming and mixing mash for distilleries, breweries, and the like purposes.

The objects of my improvements are to provide means whereby the mash from the small tub can be emptied, fed, or allowed to dis charge directly at the bottom of the mash previously contained or made in the large tub, thus permitting and causing the inflow of the mash from the small tub to intermiX upward from the bottom of the large tub through its mash (at bottom)'and rise to the surface, permeating the entire mass or contents in the large tub, and producing a more complete intermixture of the contents or mash in the large tub than has heretofore been achieved; also, it is my object to control, regulate, and direct the said inflow of the mash from the small tub to any point along the bottom inside of the larger tub, for purposes of-achieving a most decisive, complete, and reliable intermixture of the respective contents of the two tubs, and all of which will now more fully appear. I achieve the said objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a part side and sectional elevation of my improved compound mash-tun, specially showing the feed or discharge pipe that communicates from the small tub to the sluice-gate in the bottom of the large tub. Fig. 2 is a top plan of both tubs, with their auxiliary attachments of cocks, feedspouts, &c. Fig. 3 is an enlarged detail transverse section of the sluice and its gate that I provide in the bottom of the large tub.

Similar letters refer to similar parts throughout the several views.

A represents the large tub as ordinarily con structed, and provided with the usual raker or stirrer, B, that revolves to stir the contents in the said tub.

O is the usual worm or coil of pipes inside the large tub for cooling purposes, the cold and being discharged out of the cock 0. (See Fig. 2.)

c" is the steam valve or cock through which the inlet of steam to reach the mash or contents in the large tub is effected. (See Fig. 2.)

c is the hot-water pipe and cock through which warm or hot water issupplied into the large tub. (See Fig. 2.) It is in the large tub that the corn-meal mash is made, as usual, the feed being fed down the hopper 0*. (See Fig. 1.)

D is the small tub, located some distance higher than the large tub, upon suitable framework, D, as indicated.

D is the revolving stirrer or raker inside the small tub.

The shafts D D of both rakers can be connected to revolve together or revolve separately, as desiredd'is the feed-hopper to into the small tub. p

d is the steam-pipe and cook for small tub, and d is the hot-water pipe and cock for small tub. (See Fig. 2.)

My invention relates more specially to the feed the small grain water entering said coil through the cock 0,

peculiar manner and means that enable me to to be discharged or emptied into the bottom of the large tub. Hence the sluice-box in the bottom of the large tub-that is, the outer end of the boX-is in communication with the feedpipe E, as stated, while the remaining portion of the box extends inside the large tub along its bottom to the center thereof, as indicated in the drawings, or to any point along said bottom desired. gular shape, of any length, closed on all sides but one, which is left open and controlled by a slide or gate, f. Fig. 3 shows more particularly how the gate f is fitted to slide in the box, so thatit can be opened or closed, as may The sluice-box F is of a rectan-.

be desired. For this purpose the box F has grooves at f f. The gate, by its top and bottom edges,'is fitted to slide in or out of said grooves, thus opening or closing the box. I preferably embed the sluice-box F partially in the bottom, as indicated, so as not to interfere with the revolving raker, and provide the bottom of the tub with a gutter, f, in front of the gate or box, to permit the mash as it comes out of the box to rise directly from the opening.

f 2 f 3 are respective cocks in the feed-pipe E to arrest the flow of the mash at said points. (See Figs. 1, 2.)

The complete operation to produce an inter- I 5 mixture of the mash contained in both tubs is as follows: Tliecornmash is made in the large tub in the usual niaimer; also, the mash from what is known as small grain, like malt, rye, &c., is formed or made in the small tub, as usual. After the mash or contents in the large tub has been cooled to a temperature of from 180 to 150 Fahrenheit, I at that stage deem it best to mix the mash or contents,when hot, in the small tub with that which is in the large tub. The intermixtuie of the contents in both tubs is done by simply opening the cocks in the feed-pipe E and sliding the sluicegate open. This done, the mash in the higher tub, by its own weight, descends the pipe E into the sluice-box F, and out of the same at the point where its gate is open. Thus it will be noted the discharge is effected directly upon the bottom of the contents in the large tub. The revolving raker stirs the discharge away 3 5 and carries it to different points along the bottom 5 also, the inflow of the mash can rise, and

in doing so becomes the better permeated with or intermixed with the remaining portion. The gate can be opened at any point along the length of the sluice-box, so that the operator can change the points of discharge of the mash from time to time, and distribute the inflowing mash to any point along the bottom of the large tub.

What I claim is 1. In combination with a mash-tub or similar vessel, the sluice-box F, having gate f, as and for the purposes set forth.

2. 'The combination, with a mash-tub having feed or discharge pipe E, of the sluicebox F, having gate], as and for the purposes set forth.

7 3. The combination consisting, essentially, of the compound mash-tuns A D, the feed or discharge pipe E, and the sluice-box F, having gate f, arranged to operate substantially as and for the purposes set forth.

4. The improvement in compound mashtuns, consisting of the large tub A, its bottom having sluice-box F, controlled by gate f, the feed or discharge pipe E, having cocks f f, and the small tub D, all said parts combined to operate in the manner and for the purposes set forth.

In testimony of said invention 1. have here unto set my hand.

CHRISTIAN PFEFFER.

Vitnesses WILLIAM W. HERTHE'L, JOHN XV. HERTHEL. 

